Identify features of the economic business cycle. 1  Business cycles are identified as having four distinct phases: expansion, peak, contraction, and trough.  Business cycle fluctuations occur around a long-term growth trend and are usually measured by considering the growth rate of real gross domestic product.
Abstract: Rate of turn indicator for a nautical vessel, aircraft and the like indicating the rate of turn or swing in units such as degrees per unit of time from a particular course of travel.. Field of the Invention. The present invention relates to a navigational aid or nautical instrument, and more particularly, pertains to a rate of turn indicator for indicating the rate of turn from a course of travel for a vessel or other like vehicle.
The rate-of-turn indicator has the task of assisting radar naviga-tion by measuring and indicating the swing (rate of turn) of the ship to port and starboard. In conjunction with course-keeping devices (autopilot) the rate gyro, as sensor system, provides the turning rate reference.On seagoing ships, the rate-of-turn indicator serves primarily as a navigating support for sensing and indicating swing.n conjunction with course-keeping devices (autopilot) the rate gyro, as sensor system, provides the turning rate reference. On seagoing ships, the rate-of-turn indicator serves primarily as a navigating support for sensing and indicating swing.